The $5 sub was a huge hit when it debuted in the early 2000s, Money reports, but it lost popularity after a $1 price increase in 2016, spurred by franchise complaints that the price was too low to make a profit. After customer complaints, however, the $5 deal returned last winter.

Now, the availability of the deal depends on where you live. Some shops may keep the $5 promotion for certain sandwiches or on certain days, but others could offer other specials entirely. For example, customers in San Francisco can get a $3.99 6-inch sub, while other California shops are testing new menu items, like paninis.

Subway gave franchises the freedom to choose whether to offer the $5 deal because its wants to help the shops find a “regional value message,” said Haynes. “If you look at California, there’s a very different cost of business than in Arkansas.”

While the $5 sub is optional, other changes are less flexible. Haynes told USA Today that overhaul to Subway’s image will begin next year that requires franchise owners to update the decor. For a 1,200-square-foot store, it’ll cost around $40,000, USA Today reports.

New menu items and a new look may be what Subway needs: Earlier this year, the company announced the closure of 500 stores. But with tens of thousands of shops worldwide, USA Today says Subway raked in $16.8 billion in sales last year.